import java.io.File;
import java.io.IOException;

public class demo2 {
    public static void main(String [] args) throws IOException {
        File file = new File("d:/test.txt");
        System.out.println(file.exists());
        System.out.println(file.isDirectory());
        System.out.println(file.isFile());

        boolean ret=file.createNewFile();
        System.out.println("ret:"+ret);
        System.out.println(file.exists());
        System.out.println(file.isDirectory());
        System.out.println(file.isFile());

    }
}
